如何使用startup架构
本篇内容主要讲解"如何使用startup架构"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"如何使用startup架构"吧!
每天学点算法
幂集 | Power Set
一个集合的幂集是它所有子集的集合。写一个函数，给定一个集合，生成它的幂集。
The power set of a set is the set of all its subsets. Write a function that, given a set, generates its power set.
For example, given the set {1, 2, 3}, it should return {{}, {1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3}}.
# https://tutorialspoint.dev/algorithm/mathematical-algorithms/power-set# python3 program for power set import math; def printPowerSet(set,set_size): # set_size of power set of a set # with set_size n is (2**n -1) pow_set_size = (int) (math.pow(2, set_size)); counter = 0; j = 0; # Run from counter 000..0 to 111..1 for counter in range(0, pow_set_size): for j in range(0, set_size): # Check if jth bit in the # counter is set If set then # print jth element from set if((counter & (1 << j)) > 0): print(set[j], end = ""); print(""); # Driver program to test printPowerSet set = ['a', 'b', 'c']; printPowerSet(set, 3); # This code is contributed by mits.每天学点Golang
使用GORM和GIN在Golang中实现简单分页功能
原文：Implement Pagination In Golang Using GORM and GIN
The packages you need to install in our project is:
go get github.com/go-sql-driver/mysqlgo get github.com/gin-gonic/gingo get github.com/jinzhu/gorm
目录结构
- /first-api - /Config - /Controllers - /Model - /Routes - go.mod - go.sum - main.go
核心分页部分。
config.go: DB实例
repo.go
import ( "first/src/first-api/Config" models "first/src/first-api/Model")func GetAllUsers(user *models.User, pagination *models.Pagination) (*[]models.User, error) { var users []models.User offset := (pagination.Page - 1) * pagination.Limit queryBuider := Config.DB.Limit(pagination.Limit).Offset(offset).Order(pagination.Sort) result := queryBuider.Model(&models.User{}).Where(user).Find(&users) if result.Error != nil { msg := result.Error return nil, msg } return &users, nil}其他值得阅读
一个startup架构概览
原文：Architecture for a startup
静态前台（Static web app）：
S3 + CloudFront CDN + Route53
后台（Backend production system）
EC2（auto-scaling group）+ AWS ElasticCache + MySQL (RDS) + ALB + Cognito
分析（Analytics system）
Metabase + ALB + Cognito
监视（Monitoring）
NewRelic free tier + self-hosted Sentry server
部署（deployment）
Jenkins
Terraform is used for infrastructure as code
Ansible is used as configuration management.
我的妈妈在用Arch Linux
原文：My Mom Uses Arch Linux
This gist covers the whole step-by-step procedure I followed to get it up and running.
Desktop Environment: Cinnamon
Window Manager: Mutter
File Manager: Nemo
Video Player: mpv
Image Viewer: feh
Browser: Firefox
大规模Vue.js应用的4个最佳实践
原文：4 Best Practices for Large Scale Vue.js Projects
Use Vue Slots
F.I.R.S.T principle： Build & share independent components
Bit
well organized VUEX Store
└── store ├── index.js ├── actions.js ├── mutations.js └── modules
Unit Tests
Jest, Karma, or Mocha
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